During the last year and a half I have been studying the extension of carcinoma cervicis uteri with special reference to its bearing on the more radical operations for that disease. These studies1 have demanded a knowledge of the anatomy and physiology of the neighboring structures, of how the disease invades these parts, and especially the effect of the more radical operations on such organs as the bladder, ureters, rectum and other pelvic structures.
In studying cross sections of the parametrium of those cases in which the lower ends of the ureters have been resected in order to obtain a wide excision of the primary growth, an opportunity was afforded not only of determining how the growth invaded the parametrium, but also its relation to the ureters.
SAMPSON JA. THE PELVIC URETERAL SHEATH.ITS RELATION TO THE EXTENSION OF CARCINOMA CERVICIS UTERI.. JAMA. 1904;XLIII(11):707-712. doi:10.1001/jama.1904.92500110001